A) Pyrex
B) Boro silicate
C) Calcium silicate
D) Flint
Correct Answer: A
Solution :
Pyrex glass: It is a mixture of sodium aluminium borosilicates. Its coefficient of expansion is very low, therefore, it does not crack with sudden temperature change. Borosilicates: The mixture of zinc and barium borosilicates is known as zena glass. Its coefficient of expansion is very low and it is very resistant to heat, shock and common reagents. Calcium silicates: It is soft glass. It is easily fusible and used for window glass and bottles. Flint glass: It is lead potash as lime glass. It has a high refractive index and used in making prisms, lenses and other optical devices. It is soft glass and scratches easily.
You need to login to perform this action.
You will be redirected in
3 sec
